You need to add the script to populate event data on the form. Which code segment should you use?

The formContext.data.addOnLoad method is the correct client API function to register a script that executes when a model-driven app form finishes loading. This event is the appropriate trigger for populating or manipulating data as the form is initially presented to the user. The method adds a specified function, in this case myFunction, to the OnLoad event handler pipeline for the form.

B. formContext.data.removeOnLoad(myFunction): This method removes a function from the OnLoad event handler, which is the opposite of the required action.

C. formContext.data.entity.addOnSave(myFunction): This method registers a function to run during the OnSave event, which occurs when the user tries to save the record, not when the form loads.

D. addOnPreProcessStatusChange: This method is part of the business process flow object (formContext.data.process) and is used for events related to BPF stage changes, not the main form load event.

E. formContext.data.isValid(): This is a method that returns a boolean value indicating if the form data is valid. It does not register an event handler to run code.

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1. Microsoft Learn Documentation: formContext.data.addOnLoad. This document explicitly states, "Adds a function to be called when the form is loaded." This directly supports the use of this method for running scripts on form load.

Source: Microsoft, "Client API formContext.data object," Microsoft Learn, formContext.data.addOnLoad section.

2. Microsoft Learn Documentation: Events in model-driven apps. This page describes the form event pipeline, identifying OnLoad as the event that occurs when the form has loaded. It contrasts this with the OnSave event.

Source: Microsoft, "Events in model-driven apps," Microsoft Learn, "Form events" section.

3. Microsoft Learn Documentation: formContext.data.entity object. This document details the addOnSave method, confirming it is used for the save event, making it unsuitable for a form load scenario.

Source: Microsoft, "Client API formContext.data.entity object," Microsoft Learn, addOnSave section.